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Browsing by Subject "Metamaterials"

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Browsing by Subject "Metamaterials"

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    A new dielectric metamaterial building block with a strong magnetic response in the sub-1.5-micrometer region: Silicon colloid nanocavities 
    Shi, Lei; Tuzer, Turan Umut; Fenollosa Esteve, Roberto; Meseguer Rico, Francisco Javier (Wiley, 2012-11-20)
    A new dielectric metamaterial building block based on high refractive index silicon spherical nanocavities with Mie resonances appearing in the near infrared optical region is prepared and characterized. It is demonstrated ...
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    Aerogel-based metasurfaces for perfect acoustic energy absorption 
    Fernandez-Marin, Antonio A.; Jimenez, Noe; Groby, Jean-Philippe; Sánchez-Dehesa Moreno-Cid, José; Romero García, Vicente (American Institute of Physics, 2019-08-05)
    [EN] The unusual viscoelastic properties of silica aerogel plates are efficiently used to design subwavelength perfect sound absorbers. We theoretically, numerically and experimentally report a perfect absorbing metamaterial ...
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    Analogue of the quantum hanle effect and polarization conversion in non-hermitian plasmonic metamaterials 
    Ginzburg, Pavel; Rodríguez Fortuño, Francisco José; Martínez Abietar, Alejandro José; Zayats, Anatoly V. (American Chemical Society, 2012-12)
    The Hanle effect, one of the first manifestations of quantum theory introducing the concept of coherent superposition between pure states, plays a key role in numerous aspects of science varying from applicative spectroscopy ...
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    Analogue transformation acoustics and the compression of spacetime 
    García Meca, Carlos; Carloni, Sante; Barceló, Carlos; Jannes, Gil Georges Paul; Sánchez-Dehesa Moreno-Cid, José; Martínez Abietar, Alejandro José (Elsevier, 2014-08)
    A recently developed technique known as analogue transformation acoustics has allowed the extension of the transformational paradigm to general spacetime transformations under which the acoustic equations are not form ...
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    Analogue Transformations in Physics and their Application to Acoustics 
    García Meca, Carlos; Carloni, S.; Barcelo, C.; Jannes, G.; Sánchez-Dehesa Moreno-Cid, José; Martínez Abietar, Alejandro José (Nature Publishing Group, 2013-06-18)
    Transformation optics has shaped up a revolutionary electromagnetic design paradigm, enabling scientists to build astonishing devices such as invisibility cloaks. Unfortunately, the application of transformation techniques ...
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    Anisotropic Metamaterials as sensing devices in acoustics and electromagnetism 
    Sánchez-Dehesa Moreno-Cid, José; Torrent Martí, Daniel; Carbonell Olivares, Jorge (Society of Photo-optical Instrumentation Engineers (SPIE), 2012)
    We analyze the properties of acoustic and electromagnetic metamaterials with anisotropic constitutive parameters. Particularly, we analyze the so-called Radial Wave Crystals, which are radially periodic structures verifying ...
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    Antena de ranuras en guía radial para comunicaciones por satélite en la banda de milimétricas 
    Chuquitarco Jiménez, Carlos Alexander (Universitat Politècnica de València, 2019-08-01)
    [ES] El reciente y futuro despliegue de constelaciones de satélites por parte de gigantes tecnológicos pronostica una etapa de grandes avances y nuevas áreas de investigación en el campo de los dispositivos implicados en ...
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    Desarrollo de un metamaterial zurdo en el espectro visible basado en guías plasmónicas 
    Rodríguez Fortuño, Francisco José (Universitat Politècnica de València, 2013-02-18)
    [ES] Esta tesina, tras una introducción teórica a los novedosos campos de los metamateriales y la plasmónica, describe los esfuerzos de investigación realizados por el autor para la ideación de un innovador metamaterial ...
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    Design and implementation of plasmonic metamaterials and devices 
    Rodríguez Fortuño, Francisco José (Universitat Politècnica de València, 2013-07-18)
    La plasmónica es la ciencia que estudia la interacción, a escala nanométrica, entre la luz y los electrones libres de los metales, dando lugar a la propagación de ondas altamente confinadas a su superficie. La plasmónica ...
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    Design and modelling of bioinspired 3D printed structures 
    Garrido, Conrado; Alabort, Enrique; Barba, Daniel (Editorial Universitat Politècnica de València, 2022-05-11)
    [EN] Metamaterials are those that, through human engineering, have unusual properties that cannot be commonly found in nature. Recently, these metamaterials have been gaining importance due to the introduction of additive ...
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    Diffusive-light invisibility cloak for transient illumination 
    Orazbayev, Bakhtiyar; Beruete, Miguel; Martínez Abietar, Alejandro José; García Meca, Carlos (American Physical Society, 2016-12-22)
    Invisibility in a diffusive-light-scattering medium has been recently demonstrated by employing a scattering-cancellation core-shell cloak. Unlike nondiffusive cloaks, such a device can be simultaneously macroscopic, ...
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    Diseño de metasuperficies absorbentes en el infrarrojo cercano y técnicas de reconfiguración 
    Carles Rausell, Marta (Universitat Politècnica de València, 2023-07-26)
    [ES] Las metasuperficies constituyen un innovador campo de investigación en el que se está avanzando en desarrollar materiales artificiales con propiedades únicas. En particular, se están realizando esfuerzos por desarrollar ...
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    Diseño y caracterización de guías fotónicas con nanopartículas plasmónicas encima 
    Alepuz Benaches, Irene (Universitat Politècnica de València, 2013-02-18)
    [ES] Hemos estudiado el comportamiento electromagnético de una estructura compuesta por una guía de silicio con nanodiscos de aluminio en su superficie para frecuencias de telecomunicaciones. Se ha confirmado la existencia ...
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    Dual Composite Right-/Left-Handed Coplanar Waveguide Transmission Line Using Inductively Connected Split-Ring Resonators 
    Belenguer Martínez, Ángel; Cascón López, Joaquín; Lucas Borja, Alejandro; Esteban González, Héctor; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers (IEEE), 2012-10)
    In this paper, a simple geometrical modification of the well-known split-ring resonator (SRR) topology is proposed. This modification consists of joining the opposite sides of the rings by means of an inductive connection. ...
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    Dual-band double-negative-index fishnet metamaterial at millimeter-waves 
    Navarro-Cia, M.; García Meca, Carlos; Beruete, M.; Martínez Abietar, Alejandro José; Sorolla, M. (Optical Society of America, 2011)
    [EN] An effective negative refractive index (NRI) is demonstrated and experimentally verified for the first two propagation bands of a fishnet-like metamaterial at millimeter-wave frequencies. The dual-band NRI behavior ...
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    Dynamically tunable transformation thermodynamics 
    García Meca, Carlos; Barceló, Carlos (IOP Publishing, 2016-04)
    Recently, the introduction of transformation thermodynamics has provided a way to design thermal media that alter the flow of heat according to any spatial deformation, enabling the construction of novel devices such as ...
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    Elastic waves in phononic monolayer granular membranes 
    Tournat, Vincent; Pérez Arjona, Isabel; Merkel, Aurelien; Sánchez Morcillo, Víctor José; Gusev, Vitalyi (IOP Publishing: Open Access Journals, 2011)
    The vibrational properties of out-of-plane elastic waves in hexagonal monolayer granular membranes were studied theoretically. The predicted propagation modes involve an out-of-plane displacement and two rotations with ...
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    Emerging topics in nanophononics and elastic, acoustic, and mechanical metamaterials: an overview 
    Krushynska, Anastasiia O.; Torrent, Daniel; Aragón, Alejandro M.; Ardito, Raffaele; Bilal, Osama R.; Bonello, Bernard; Bosia, Federico; Chen, Yi; Christensen, Johan; Colombi, Andrea; Cummer, Steven A.; Djafari-Rouhani, Bahram; Fraternali, Fernando; Galich, Pavel I.; García, Pedro David; Groby, Jean-Philippe; Jimenez, Noe; Picó Vila, Rubén (Walter de Gruyter GmbH, 2023-02-23)
    [EN] This broad review summarizes recent advances and "hot " research topics in nanophononics and elastic, acoustic, and mechanical metamaterials based on results presented by the authors at the EUROMECH 610 Colloquium ...
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    Engineering antenna radiation patterns via quasi-conformal mappings 
    García Meca, Carlos; Martínez Abietar, Alejandro José; Leonhardt, U. (Optical Society of America, 2011)
    We use a combination of conformal and quasi-conformal mappings to engineer isotropic electromagnetic devices that modify the omnidirectional radiation pattern of a point source. For TE waves, the designed devices are also ...
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    Exciting surface plasmons with transformation media 
    García Meca, Carlos; Ortuño Molinero, Rubén; Martí Sendra, Javier; Martínez Abietar, Alejandro José (Springer Verlag (Germany), 2012-12)
    We present a way of exciting surface plasmon polaritons along non-patterned metallic surfaces by means of a flat squeezing slab designed with transformation optics. The slab changes the dispersion relation of incident ...